AAON, Inc. First Quarter Results Call

TULSA, OK--(Marketwire - May 1, 2012) - AAON, Inc. (NASDAQ: AAON). A question and answer session will follow a brief presentation by our President, Norman Asbjornson. The entire call should last about 45 minutes.

The call will cover:

• First Quarter Performance for the period ended 03/31/2012.
• Recent Events
• Future Outlook

Date of Call: Tuesday, May 8, 2012
Time: 4:15 p.m. (Eastern Time)
Telephone #: 1-877-737-1669
Pass code: VA27085

Rebroadcast (available through May 15, 2012)

Toll Free: 1-800-355-2355
Pass code: 73524#

AAON looks forward to your attendance at the call.

About AAON

AAON is engaged in the engineering, manufacturing, marketing and sale of air conditioning and heating equipment consisting of standard, semi-custom and custom rooftop units, chillers, packaged mechanical rooms, air handling units, make-up air units, heat recovery units, condensing units and coils. Since the founding of AAON in 1988, AAON has maintained a commitment to design, develop, manufacture and deliver heating and cooling products to perform beyond all expectations and demonstrate the value of AAON to our customers. For more information, please visit www.aaon.com.